560| Access Points AOS-W 6.5.3.x| User Guide
VHT Support on OAW-AP200 Series, OAW-AP210 Series, OAW-AP220 Series, and
OAW-AP270 Series Access Points
This feature enables Very High Throughput (VHT) rates on the 2.4 GHz band, providing 256-QAM modulation
and encoding that allows for 600 Mbit/sec performance over 802.11n networks. Maximum data rates are
increased on the 2.4 GHz band through the addition of VHT Modulation and Coding Scheme (MCS) values 8
and 9, which support the highly efficient modulation rates in 256-QAM. Starting with AOS-W 6.4.2.0, VHT is
supported on OAW-AP200 Series, OAW-AP210 Series, OAW-AP220 Series, and OAW-AP270 Series access points
on both 20 MHz and 40 MHz channels.
Using the switch’s CLI or WebUI, VHT MCS values 0-9 are enabled, overriding the existing high-throughput (HT)
MCS values 0-7, which have a lower maximum data rate. However, this feature should be disabled if individual
rate selection is required.
Transmit Power Calculation support on OAW-AP200 Series and OAW-AP300 Series
access points
This feature allows calculation of the transmit power of each outgoing 802.11 packet so that AP adheres to the
latest regulatory limits. Also, the MIMO gain is considered while calculating the transmit power. MIMO gain
refers to effective increase in EIRP of a packet due to usage of multiple antennae (power gain) and various
signal processing techniques such as CDD, transmit beamforming etc., (correlation gain).
AP transmit power calculation has been modified to comprehend the increasing sophistication of signal
processing techniques that address radio range and reliability. Due to this greater accuracy in computing the
transmit power on a per packet basis via the contributing DSP techniques as well as regulatory limitations, it is
possible that some customers might find their prior transmit power settings will need to be slightly increased to
obtain the same conducted power as before.
Two new parameters, a-ant-pol and g-ant-pol, are added to configure the antenna polarization for both the
radios. A new show command show ap debug power-table is added that displays the following information:
n AP hardware limits
n Regulatory limits
n Transmit power limits (conducted powers and EIRP) as a function of AP hardware limits, regulatory limits,
user configured limits and any other override limits.
This feature is supported on the OAW-AP200 Series and OAW-AP300 Series access points and the command show
ap debug power-table does not display any value for OAW-AP100 Series access points.
Managing 802.11a/802.11g Profiles Using the WebUI
Use the following procedures to define and manage 802.11a and 802.11g RF management profiles Using the
WebUI.
Creating or Editing a Profile
1. Navigate to the Configuration > Wireless > AP Configuration window. Select either the AP Group or
AP Specific tab.
n If you selected AP Group, click the Edit button by the AP group for which you want to create or change
an RF management profile.
n If you selected AP Specific, click the Edit button by the AP for which you want to create or change an RF
management profile.
2. In the Profiles list, expand the RF Management menu, then select either 802.11a radio profile or
802.11g radio profile.
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